JP2000113708A - Lighting system - Google Patents
Lighting systemInfo
- Publication number
- JP2000113708A JP2000113708A JP10281745A JP28174598A JP2000113708A JP 2000113708 A JP2000113708 A JP 2000113708A JP 10281745 A JP10281745 A JP 10281745A JP 28174598 A JP28174598 A JP 28174598A JP 2000113708 A JP2000113708 A JP 2000113708A
- Authority
- JP
- Japan
- Prior art keywords
- light guide
- light
- guide plate
- fine particles
- lighting device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、展示物や室内空間
の照明、その他各種の照明に用いる照明装置に係わり、
特に液晶表示装置のバックライトとして好適する照明装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device used for lighting an exhibition object, indoor space, and other various lighting.
In particular, the present invention relates to a lighting device suitable as a backlight for a liquid crystal display device.
【０００２】[0002]
【従来の技術】近年、透過型または半透過型の液晶表示
装置における照明方式として、液晶表示パネルの背面直
下に蛍光管等の光源を配設する直下方式と、透明プラス
チックから成る導光板を用いて面状の発光照明を作製
し、これを表示パネルの背面に配設するエッジライト方
式とが知られている。そして、エッジライト方式は、直
下方式に比べて薄型で輝度の均整度が高いという長所を
有するため、この方式による面発光装置（バックライト
装置）が液晶表示装置における照明方式の主流になりつ
つある。2. Description of the Related Art In recent years, as a lighting system in a transmissive or transflective liquid crystal display device, a direct type in which a light source such as a fluorescent tube is disposed immediately below the back of the liquid crystal display panel and a light guide plate made of transparent plastic are used. There is known an edge light method in which a planar light-emitting illumination is produced by using the same and disposed on the back of a display panel. The edge light method has the advantages of being thinner and having a higher degree of uniformity of brightness than the direct light method. Therefore, the surface light emitting device (backlight device) by this method is becoming the mainstream of the illumination method in the liquid crystal display device. .
【０００３】このようなバックライト装置では、光源か
らの光を液晶表示パネルに導く導光板において、その反
射面、すなわち表示パネルが配置された光出射側と反対
側の面に、酸化チタンや硫化バリウムの粉末を混入した
白色インクによりスクリーン印刷することにより、格子
状等に配列されたドットパターンを形成し、このドット
パターンにより光を乱反射乃至散乱させることが行なわ
れている。さらに、このような散乱用ドットパターンを
形成する代わりに、導光板を構成する透明プラスチック
中に、このプラスチックと屈折率が異なりかつ相溶性を
有しない有機または無機材料から成る微粒子を分散さ
せ、導光板全体に散乱性を持たせる方法が知られてい
る。[0003] In such a backlight device, in a light guide plate for guiding light from a light source to a liquid crystal display panel, titanium oxide or sulfide is provided on a reflection surface thereof, that is, a surface opposite to a light emission side on which the display panel is disposed. Screen printing is performed with white ink mixed with barium powder to form a dot pattern arranged in a grid or the like, and light is irregularly reflected or scattered by the dot pattern. Furthermore, instead of forming such a scattering dot pattern, fine particles made of an organic or inorganic material having a different refractive index from the plastic and having no compatibility with the plastic are dispersed in a transparent plastic constituting the light guide plate, and the light guide is formed. There is known a method of giving the entire light plate scattering properties.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、これら
の導光板においては、それぞれ以下に示す問題があっ
た。すなわち、白色インク等により反射面に散乱用ドッ
トパターンが形成された導光板では、ドットパターンを
スクリーン印刷する工程を必要とし、製造工程数が多く
なるという問題があった。However, these light guide plates have the following problems, respectively. That is, the light guide plate in which the scattering dot pattern is formed on the reflection surface by white ink or the like requires a step of screen-printing the dot pattern, and has a problem that the number of manufacturing steps is increased.
【０００５】また、屈折率の異なる材料から成る微粒子
を透明プラスチック中に分散させた導光板では、印刷工
程を必要とせず、製造コストを低減することができると
いう利点があるが、輝度を上げることが難しいため、10
インチ以上の大型の液晶表示装置用として、実用化され
ていないのが現状であった。A light guide plate in which fine particles made of materials having different refractive indices are dispersed in a transparent plastic has an advantage that a printing step is not required and the production cost can be reduced, but the brightness is increased. Is difficult, so 10
At present, it has not been put to practical use for large-sized liquid crystal display devices of inches or more.
【０００６】すなわち、この導光板では、入射した光が
屈折率の異なる材料から成る微粒子により散乱され、出
射側の面（出射面）から出射することによって面光源と
して機能する。そして、透明プラスチック中の微粒子に
よる散乱光には、出射面や反射面に対して浅い角度で入
射して、中央部から逸れる方向に進む成分が多く、出射
面等に対して垂直に近い大きな角度で入射する成分が少
ない。そのため、光の利用効率が低く、発光輝度を高め
ることが難しかった。That is, in this light guide plate, the incident light is scattered by the fine particles made of materials having different refractive indices, and is emitted from the surface on the emission side (the emission surface) to function as a surface light source. The scattered light by the fine particles in the transparent plastic has a large component which is incident at a shallow angle with respect to the emission surface or the reflection surface and travels in a direction deviating from the central portion, and is substantially perpendicular to the emission surface. And the incident component is small. Therefore, the light use efficiency is low, and it is difficult to increase the light emission luminance.
【０００７】本発明は、これらの問題を解決するために
なされたもので、導光板の出射面に正面から（ほぼ垂直
に）向かう光の量を多くし、発光が均一で輝度が高めら
れた照明装置を提供することを目的とする。The present invention has been made to solve these problems, and has increased the amount of light traveling from the front (substantially perpendicularly) to the exit surface of the light guide plate, thereby achieving uniform light emission and increased brightness. An object is to provide a lighting device.
【０００８】[0008]
【課題を解決するための手段】本発明の照明装置は、導
光板と、該導光板の少なくとも１つの側面に沿って配設
された光源と、この光源を覆い、該光源からの光を反射
して前記導光板の１側面に集光するように配置された反
射器とを備えた照明装置において、前記導光板が、透明
プラスチック中に、該プラスチックと異なる屈折率を有
する有機または無機材料から成り中空構造を有する微粒
子が、分散されて構成されたものであることを特徴とす
る。SUMMARY OF THE INVENTION An illumination device according to the present invention comprises a light guide plate, a light source disposed along at least one side of the light guide plate, a light source covering the light source, and reflecting light from the light source. And a reflector arranged so as to converge light on one side surface of the light guide plate, wherein the light guide plate is made of an organic or inorganic material having a refractive index different from that of the plastic in a transparent plastic. It is characterized in that fine particles having a hollow structure are dispersed and constituted.
【０００９】本発明において、導光板を構成する透明プ
ラスチックとしては、アクリル樹脂、メタクリル樹脂、
ポリカーボネート樹脂、スチレン樹脂、アクリロニトリ
ル−スチレン共重合体樹脂等が例示される。また、この
ような透明プラスチック中に分散される中空構造を有す
る微粒子（以下、中空微粒子と示す。）を構成する材料
としては、以下に示すように、前記した透明プラスチッ
クと異なる屈折率を有し、かつ該プラスチックと溶け合
って一体化することがない有機材料または無機材料を使
用することができる。すなわち、前記プラスチックより
屈折率の小さい有機材料として、フッ素樹脂が、屈折率
の大きい有機材料として、臭素樹脂やヨウ素樹脂がそれ
ぞれ例示され、透明プラスチックより屈折率の大きい無
機材料として、シリカ、アエロジル等の二酸化ケイ素
（ＳｉＯ2 ）、アナターゼ、ルチル等の二酸化チタン
（ＴｉＯ2 ）、アルミナ、タルク、炭酸カルシウム、酸
化マグネシウム等が例示される。なお、このような有機
または無機材料と、透明プラスチックとの屈折率の差△
n が大きいほど、境界面での屈折角が大きくなり、導光
板の発光効率が向上される。In the present invention, as the transparent plastic constituting the light guide plate, acrylic resin, methacrylic resin,
Examples thereof include a polycarbonate resin, a styrene resin, and an acrylonitrile-styrene copolymer resin. Further, as a material constituting fine particles having a hollow structure dispersed in such a transparent plastic (hereinafter, referred to as hollow fine particles), as described below, a material having a refractive index different from that of the above-mentioned transparent plastic is used. Further, an organic material or an inorganic material which does not melt and integrate with the plastic can be used. That is, as an organic material having a lower refractive index than the plastic, a fluororesin is exemplified, and as an organic material having a higher refractive index, a bromine resin or an iodine resin is exemplified. As an inorganic material having a higher refractive index than the transparent plastic, silica, Aerosil, or the like is used. Silicon dioxide (SiO 2 ), titanium dioxide (TiO 2 ) such as anatase and rutile, alumina, talc, calcium carbonate, magnesium oxide and the like. The difference in the refractive index between such an organic or inorganic material and a transparent plastic is described below.
As n is larger, the refraction angle at the boundary surface is larger, and the luminous efficiency of the light guide plate is improved.
【００１０】さらに、このような屈折率の異なる材料か
ら構成される中空微粒子の大きさ（直径）は、以下に示
す理由により、 0.1〜40μm の範囲とすることが望まし
い。すなわち、本発明の導光板においては、透明プラス
チック中に分散された微粒子によるミー散乱で、光を前
方にも散乱させることによって、発光効率の向上が図ら
れているので、微粒子の直径は、粒子による光の散乱
が、レイリー散乱ではなくミー散乱となる大きさであ
る、光の波長以上とすることが望ましい。また、微粒子
の大きさが大きすぎると、散乱性が弱くなり、発光効率
が低下してしまう。したがって中空微粒子の直径は、
0.1〜40μm の範囲とすることが望ましい。Further, the size (diameter) of such hollow fine particles composed of materials having different refractive indexes is preferably in the range of 0.1 to 40 μm for the following reason. That is, in the light guide plate of the present invention, Mie scattering by the fine particles dispersed in the transparent plastic scatters light forward, thereby improving the luminous efficiency. It is desirable that the scattering of light due to is not less than the wavelength of light, which is a size that causes Mie scattering instead of Rayleigh scattering. On the other hand, if the size of the fine particles is too large, the scattering properties are weakened, and the luminous efficiency is reduced. Therefore, the diameter of the hollow particles is
It is desirable that the thickness be in the range of 0.1 to 40 μm.
【００１１】さらに本発明の導光板において、このよう
な中空微粒子の配合量は、透明プラスチックに対して0.
0001〜 5重量％の割合とすることが望ましい。中空微粒
子の配合割合が0.0001重量％未満では、配合による散乱
性向上の効果がほとんどなく、反対に 5重量％を越えた
場合には、透明プラスチックに対して均一に混合、分散
させることが難しく、輝度の高い導光板が得られない。Further, in the light guide plate of the present invention, the amount of such hollow fine particles is 0.1% with respect to the transparent plastic.
It is desirable that the ratio be 0001 to 5% by weight. If the compounding ratio of the hollow fine particles is less than 0.0001% by weight, the effect of improving the scattering property by the compounding is almost negligible. Conversely, if it exceeds 5% by weight, it is difficult to uniformly mix and disperse it in the transparent plastic, A light guide plate with high brightness cannot be obtained.
【００１２】本発明においては、導光板での透明プラス
チック中への中空微粒子の配合分散量を少なくするとと
もに、導光板の反射面（光出射面と反対側の面）に、散
乱用のドットパターンを形成して光を乱反射（散乱）さ
せることにより、発光効率を高め輝度を向上させるとと
もに、輝度の均整化を図ることができる。ここで、散乱
用のドットの大きさは、直径が 1μm から 1.2mmとする
ことが望ましく、例えば白色インクによりドットパター
ンをスクリーン印刷することにより形成される。In the present invention, the dispersion amount of the hollow fine particles in the transparent plastic in the light guide plate is reduced, and the scattering dot pattern is formed on the reflection surface (the surface opposite to the light exit surface) of the light guide plate. By irregularly reflecting (scattering) light by forming the luminous efficiency, the luminous efficiency can be increased, the luminance can be improved, and the luminance can be leveled. Here, the size of the scattering dots is desirably 1 μm to 1.2 mm in diameter, and is formed, for example, by screen-printing a dot pattern with white ink.
【００１３】本発明の照明装置においては、導光板を構
成する透明プラスチックに中空微粒子が分散されている
ので、導光板の出射面に正面から（垂直に近い大きな角
度で）向かう散乱光の割合が多くなり、発光輝度が向上
しかつ輝度の均整度が高くなる。これは、以下に示す理
由によるものと考えられる。すなわち、光源から出射さ
れた光は、導光板の側端から内部に入射し、導光板内を
主面である出射面に沿った方向に進行しながら、透明プ
ラスチック中に存在する無数の屈折率の異なる微小区分
により散乱され、出射面に正面から向かう散乱光成分は
そのまま出射される。このとき、透明プラスチック中の
前記した微小区分が、中空構造を有する微粒子であり、
内部にさらに屈折率の異なる区分（空気層）を有してい
るので、中空構造を持たない場合と比べて媒質境界面の
数が多くなり、これらの境界面でそれぞれ光との相互作
用を生じることになる。そのため、正面から出射面に向
かう散乱光量が多くなると考えられる。In the lighting device of the present invention, since the hollow fine particles are dispersed in the transparent plastic constituting the light guide plate, the ratio of the scattered light traveling from the front to the exit surface of the light guide plate (at a large angle close to vertical) is reduced. As a result, the emission luminance is improved and the uniformity of the luminance is increased. This is considered to be due to the following reason. That is, the light emitted from the light source enters the inside from the side end of the light guide plate, and travels in the light guide plate in the direction along the emission surface, which is the main surface, while the innumerable refractive indexes existing in the transparent plastic are present. The scattered light component scattered by the different minute sections and heading toward the emission surface from the front is emitted as it is. At this time, the above-mentioned minute section in the transparent plastic is fine particles having a hollow structure,
Since there is a section (air layer) with a different refractive index inside, the number of medium interfaces is larger than that without a hollow structure, and interaction with light occurs at each of these interfaces. Will be. Therefore, it is considered that the amount of scattered light from the front to the emission surface increases.
【００１４】[0014]
【発明の実施の形態】以下、本発明の実施例を図面に基
づいて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１５】図１は、本発明の照明装置の一実施例であ
る、液晶表示装置のバックライト装置の概略構成を示す
分解断面図である。図において、符号１は導光板を示
し、この導光板１は、アクリル樹脂、メタクリル樹脂等
の透明性の高いプラスチック１ａ中に、これと異なる屈
折率を有する有機または無機材料から成る直径が 0.1〜
40μm の中空微粒子１ｂ、例えば中空のガラスビーズ
が、0.0001〜 5重量％の割合で配合され分散されて構成
されている。なお、このような導光板１としては、厚さ
が各部一定の平板状のものを使用しても良いが、光源側
から反光源側に向かって厚さを薄くした、断面くさび形
状の板を使用する方が、軽量化と発光の効率の点でより
望ましい。FIG. 1 is an exploded sectional view showing a schematic structure of a backlight device of a liquid crystal display device, which is an embodiment of the lighting device of the present invention. In the figure, reference numeral 1 denotes a light guide plate, and the light guide plate 1 is made of a highly transparent plastic 1a such as an acrylic resin or a methacrylic resin, and has a diameter of 0.1 to 0.1 made of an organic or inorganic material having a different refractive index.
40 μm hollow fine particles 1 b, for example, hollow glass beads are mixed and dispersed at a ratio of 0.0001 to 5% by weight. In addition, as such a light guide plate 1, a plate-like plate having a constant thickness at each portion may be used, but a plate having a wedge-shaped cross section having a smaller thickness from the light source side to the opposite light source side may be used. Use is more desirable in terms of weight reduction and light emission efficiency.
【００１６】そして、この導光板１の１つの側面に近接
して、蛍光管（冷陰極管）やハロゲンランプのような棒
状の光源２が沿設され、その外側に、反射面が断面放物
線形をなす反射器３が、光源２を覆うように設けられて
いる。ここで、反射器３としては、ポリエステル等のプ
ラスチックシートの内面に、銀等の反射率の高い金属を
蒸着して反射層を形成したものが使用される。また、こ
のような導光板１の光出射面（発光面）Ｓ側には、輝度
の均一化のために、エンボス加工等の処理が施された拡
散板４が所定の間隔をおいて配設されており、その上
に、Ｖ型の溝が加工されまたは波状に加工された集光効
果のあるプリズムシート５が設けられ、高輝度化が図ら
れている。A rod-like light source 2 such as a fluorescent tube (cold-cathode tube) or a halogen lamp is provided along one side surface of the light guide plate 1, and a reflection surface has a parabolic cross section outside thereof. The reflector 3 is provided so as to cover the light source 2. Here, as the reflector 3, a reflector having a reflective layer formed by depositing a metal having high reflectivity such as silver on the inner surface of a plastic sheet such as polyester is used. On the light exit surface (light emitting surface) S side of the light guide plate 1, a diffusion plate 4 on which a process such as embossing has been performed is disposed at a predetermined interval in order to make the luminance uniform. Further, a prism sheet 5 having a light condensing effect, in which a V-shaped groove is processed or processed into a wavy shape, is provided thereon, thereby achieving higher luminance.
【００１７】さらに、導光板１の反射面Ｒ側には、光の
漏れ防止のために、白色ポリエステル等からなる反射シ
ート６が重ねて配置されている。ここで、光源２が配置
された側面以外の導光板１の３方の側面にも、光漏れ防
止のために、それぞれ白色ポリエステル等からなる反射
テープ（図示を省略。）を貼り付けることが望ましい。Further, on the reflection surface R side of the light guide plate 1, a reflection sheet 6 made of white polyester or the like is arranged so as to overlap to prevent light leakage. Here, it is desirable to attach reflective tapes (not shown) made of white polyester or the like to the three side surfaces of the light guide plate 1 other than the side surface on which the light source 2 is disposed, in order to prevent light leakage. .
【００１８】このように構成される実施例の照明装置に
おいては、光源２から出射され導光板１の側端から内部
に入射した光が、透明プラスチック１ａ中に存在する屈
折率の異なる材料から成る中空微粒子１ｂにより散乱さ
れ、出射面Ｓに向かう成分の割合が多い散乱光が得られ
る。したがって、出射面に対して垂直に近い大きな角度
で向かう光の量が多くなり、発光効率が向上し、均一で
高い輝度が得られる。In the illuminating device according to the embodiment having the above-described structure, the light emitted from the light source 2 and entering the inside of the light guide plate 1 from the side end is made of materials having a different refractive index existing in the transparent plastic 1a. Scattered light that is scattered by the hollow fine particles 1b and has a high proportion of the component toward the emission surface S is obtained. Therefore, the amount of light traveling at a large angle close to the exit surface at a large angle is increased, the luminous efficiency is improved, and uniform and high luminance is obtained.
【００１９】次に、本発明の別の実施例について説明す
る。Next, another embodiment of the present invention will be described.
【００２０】第２の実施例においては、図２に要部を示
すように、前記実施例と同様に構成された導光板１の反
射面Ｒに、酸化チタン等を混入した白色インクをシルク
スクリーン等を用いて印刷することにより、白色ドット
（直径 1μm 〜 1.2mm）７が形成され、散乱用のドット
パターンをなしている。In the second embodiment, as shown in FIG. 2, a white ink mixed with titanium oxide or the like is silk-screened on the reflection surface R of the light guide plate 1 configured in the same manner as the above embodiment. By printing using such a method, white dots (diameter: 1 μm to 1.2 mm) 7 are formed, forming a scattering dot pattern.
【００２１】この実施例の照明装置においては、導光板
１の反射面Ｒに、白色インクの印刷により散乱用のドッ
トパターンが形成されており、導光板１の反射面Ｒの散
乱性がさらに増大されているので、発光効率が高められ
輝度が向上する。In the lighting device of this embodiment, a dot pattern for scattering is formed on the reflection surface R of the light guide plate 1 by printing white ink, and the scattering property of the reflection surface R of the light guide plate 1 is further increased. Therefore, the luminous efficiency is increased and the luminance is improved.
【００２２】次に、本発明の具体的実施例について記載
する。Next, specific examples of the present invention will be described.
【００２３】実施例 メタクリル樹脂（住友化成社製のMG10）中に、直径10μ
m の中空ガラスビーズ（ガラスの屈折率n= 1.5〜 1.
6、）を、0.01重量％の割合で添加混合した組成物を用
い、常法により導光板を成形した後、この導光板を使用
して、図１に示す照明装置を作製した。また比較例とし
て、中空ガラスビーズの代わりに、中空でない（充実構
造を有する）同じ大きさのガラスビーズを使用して導光
板を成形し、この導光板を使用し、実施例と同様にして
照明装置を作製した。Example 10 μm diameter methacrylic resin (MG10 manufactured by Sumitomo Chemical Co., Ltd.) was used.
m hollow glass beads (refractive index of glass n = 1.5 to 1.
6,) was added and mixed at a ratio of 0.01% by weight to form a light guide plate by a conventional method, and then the lighting device shown in FIG. 1 was manufactured using the light guide plate. As a comparative example, instead of hollow glass beads, a light guide plate was formed using glass beads of the same size that are not hollow (having a solid structure), and this light guide plate was used. The device was made.
【００２４】次いで、実施例および比較例でそれぞれ得
られた照明装置において、プリズムシートの上面の輝度
を、光源からの距離が 0〜 165mm（16.5mmピッチ）で、
トプコン社製の輝度計（BM-7）を使用して測定した。測
定結果を、図３のグラフに示す。Next, in the lighting device obtained in each of the examples and comparative examples, the luminance of the upper surface of the prism sheet was measured at a distance from the light source of 0 to 165 mm (16.5 mm pitch).
The measurement was performed using a luminance meter (BM-7) manufactured by Topcon. The measurement results are shown in the graph of FIG.
【００２５】この図から、中空ガラスビーズを配合した
組成物で導光板を構成した実施例では、中空ガラスビー
ズに代わり充実構造のガラスビーズを用いた比較例と比
べて、導光板の出射面（プリズムシートの上面）の輝度
が平均で約40％向上しており、発光効率が向上している
ことがわかった。From this figure, it can be seen that in the embodiment in which the light guide plate is constituted by the composition containing the hollow glass beads, the light exit surface of the light guide plate (in comparison with the comparative example in which solid glass beads are used instead of the hollow glass beads). The brightness of the upper surface of the prism sheet) was improved by about 40% on average, indicating that the luminous efficiency was improved.
【００２６】[0026]
【発明の効果】以上の説明から明らかなように、本発明
の照明装置においては、透明プラスチック中に屈折率の
異なる材料から成る多数の中空微粒子が分散された導光
板が使用されているので、これらの微粒子での散乱によ
り、出射面に正面から向かう光の量が多くなる。したが
って、発光が均一で高い輝度が得られる。As is apparent from the above description, in the lighting device of the present invention, a light guide plate in which a number of hollow fine particles made of materials having different refractive indexes are dispersed in a transparent plastic is used. Due to the scattering by these fine particles, the amount of light heading toward the emission surface from the front increases. Therefore, high luminance can be obtained with uniform light emission.
【図１】本発明の照明装置の第１の実施例の概略構成を
示す分解断面図。FIG. 1 is an exploded sectional view showing a schematic configuration of a first embodiment of a lighting device of the present invention.
【図２】本発明の第２の実施例において、導光板の概略
構成を示す断面図。FIG. 2 is a sectional view showing a schematic configuration of a light guide plate according to a second embodiment of the present invention.
【図３】本発明の実施例および比較例でそれぞれ得られ
た照明装置において、導光板の出射面の輝度の測定結果
を示すグラフ。FIG. 3 is a graph showing the measurement results of the luminance of the light exit surface of the light guide plate in the lighting devices obtained in Examples and Comparative Examples of the present invention.
１………導光板 １ａ………透明プラスチック １ｂ………透明プラスチックと異なる屈折率の材料から
成る中空微粒子 ２………光源 ３………反射器 ６………反射シート ７………白色ドットDESCRIPTION OF SYMBOLS 1 ... Light guide plate 1a ... Transparent plastic 1b ... Hollow fine particles which consist of a material with a different refractive index from transparent plastic 2 ... Light source 3 ... Reflector 6 ... Reflective sheet 7 ... White Dot
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2H091 FA14Z FA21Z FA23Z FA31Z FA41Z FA42Z FB02 FB08 FB12 FB13 FC02 FC12 FD04 FD06 FD23 KA01 LA03 LA18 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H091 FA14Z FA21Z FA23Z FA31Z FA41Z FA42Z FB02 FB08 FB12 FB13 FC02 FC12 FD04 FD06 FD23 KA01 LA03 LA18
Claims (6)
側面に沿って配設された光源と、この光源を覆い、該光
源からの光を反射して前記導光板の１側面に集光するよ
うに配置された反射器とを備えた照明装置において、 前記導光板が、透明プラスチック中に、該プラスチック
と異なる屈折率を有する有機または無機材料から成り中
空構造を有する微粒子が、分散されて構成されたもので
あることを特徴とする照明装置。1. A light guide plate, a light source disposed along at least one side surface of the light guide plate, a light source covering the light source, reflecting light from the light source, and condensing the light on one side surface of the light guide plate. A light guide plate, wherein the light guide plate is made of an organic or inorganic material having a refractive index different from that of the plastic, and fine particles having a hollow structure are dispersed. A lighting device, comprising: a lighting device;
ることを特徴とする請求項１記載の照明装置。2. The lighting device according to claim 1, wherein said fine particles have a diameter of 0.1 to 40 μm.
対して0.0001〜 5重量％の割合で配合されていることを
特徴とする請求項１または２記載の照明装置。3. The lighting device according to claim 1, wherein the fine particles are blended in a ratio of 0.0001 to 5% by weight based on the transparent plastic.
ットパターンが形成されていることを特徴とする請求項
１乃至３のいずれか１項記載の照明装置。4. The lighting device according to claim 1, wherein a scattering dot pattern is formed on one main surface of the light guide plate.
径が、 1μm 〜 1.2mmであることを特徴とする請求項４
記載の照明装置。5. The scattering dot pattern according to claim 4, wherein the diameter of the dots is 1 μm to 1.2 mm.
The lighting device according to the above.
クの印刷により形成されたものであることを特徴とする
請求項４または５記載の照明装置。6. The lighting device according to claim 4, wherein the scattering dot pattern is formed by printing white ink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10281745A JP2000113708A (en) | 1998-10-02 | 1998-10-02 | Lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10281745A JP2000113708A (en) | 1998-10-02 | 1998-10-02 | Lighting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000113708A true JP2000113708A (en) | 2000-04-21 |
Family
ID=17643402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10281745A Withdrawn JP2000113708A (en) | 1998-10-02 | 1998-10-02 | Lighting system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000113708A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020094846A (en) * | 2001-06-08 | 2002-12-18 | 강신원 | Lightguides having various size and dispersed form light scattering particles |
| WO2003098270A2 (en) * | 2002-05-16 | 2003-11-27 | Röhm GmbH & Co. KG | Improved light-guiding bodies and method for the production thereof |
| DE10229064A1 (en) * | 2002-06-28 | 2004-01-22 | Osram Opto Semiconductors Gmbh | Light source element has at least one glass plate with light outlet surface, several 3D structures as hollow shapes in plate, reflective or diffusing film on surface opposite outlet surface and sides |
| WO2003079414A3 (en) * | 2002-03-15 | 2004-04-08 | Photon X Inc | Optical polymer nanocomposite substrates with surface relief structures |
| JP2006003914A (en) * | 2000-06-23 | 2006-01-05 | Samsung Electronics Co Ltd | Liquid crystal display having novel light guide plate structure |
| KR100634756B1 (en) * | 2000-11-06 | 2006-10-16 | 삼성전자주식회사 | Liquid Crystal Display having Light Guide Plate with a mesh pattern on lateral surfaces |
| KR100672915B1 (en) | 2004-10-19 | 2007-01-22 | 포하우스 코퍼레이션 | Backlight unit for liquid crystal display |
| JP2007317659A (en) * | 2006-05-26 | 2007-12-06 | Avago Technologies General Ip (Singapore) Private Ltd | Indirect lighting apparatus for illuminating optical waveguide |
| WO2008121475A1 (en) * | 2007-03-30 | 2008-10-09 | 3M Innovative Properties Company | Illuminated license plate |
| CN103119351A (en) * | 2010-09-08 | 2013-05-22 | 富士胶片株式会社 | Light guide plate, planar lighting device, and liquid crystal display device |
| KR101291976B1 (en) * | 2006-04-28 | 2013-08-09 | 엘지디스플레이 주식회사 | Light guiding member and display apparatus having the light guiding member |
| KR20160016020A (en) * | 2014-08-01 | 2016-02-15 | 엘지디스플레이 주식회사 | Reflector for uniform brightness and liquid crystal display device having thereof |
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1998
- 1998-10-02 JP JP10281745A patent/JP2000113708A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006003914A (en) * | 2000-06-23 | 2006-01-05 | Samsung Electronics Co Ltd | Liquid crystal display having novel light guide plate structure |
| KR100634756B1 (en) * | 2000-11-06 | 2006-10-16 | 삼성전자주식회사 | Liquid Crystal Display having Light Guide Plate with a mesh pattern on lateral surfaces |
| KR20020094846A (en) * | 2001-06-08 | 2002-12-18 | 강신원 | Lightguides having various size and dispersed form light scattering particles |
| WO2003079414A3 (en) * | 2002-03-15 | 2004-04-08 | Photon X Inc | Optical polymer nanocomposite substrates with surface relief structures |
| WO2003098270A3 (en) * | 2002-05-16 | 2004-10-14 | Roehm Gmbh | Improved light-guiding bodies and method for the production thereof |
| WO2003098270A2 (en) * | 2002-05-16 | 2003-11-27 | Röhm GmbH & Co. KG | Improved light-guiding bodies and method for the production thereof |
| DE10229064A1 (en) * | 2002-06-28 | 2004-01-22 | Osram Opto Semiconductors Gmbh | Light source element has at least one glass plate with light outlet surface, several 3D structures as hollow shapes in plate, reflective or diffusing film on surface opposite outlet surface and sides |
| DE10229064B4 (en) * | 2002-06-28 | 2008-08-14 | Osram Gesellschaft mit beschränkter Haftung | Liquid crystal display |
| KR100672915B1 (en) | 2004-10-19 | 2007-01-22 | 포하우스 코퍼레이션 | Backlight unit for liquid crystal display |
| KR101291976B1 (en) * | 2006-04-28 | 2013-08-09 | 엘지디스플레이 주식회사 | Light guiding member and display apparatus having the light guiding member |
| JP4635027B2 (en) * | 2006-05-26 | 2011-02-16 | アバゴ・テクノロジーズ・ジェネラル・アイピー（シンガポール）プライベート・リミテッド | Indirect illumination device for illuminating an optical waveguide |
| JP2007317659A (en) * | 2006-05-26 | 2007-12-06 | Avago Technologies General Ip (Singapore) Private Ltd | Indirect lighting apparatus for illuminating optical waveguide |
| US7736044B2 (en) | 2006-05-26 | 2010-06-15 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Indirect lighting device for light guide illumination |
| WO2008121475A1 (en) * | 2007-03-30 | 2008-10-09 | 3M Innovative Properties Company | Illuminated license plate |
| EP2132059A4 (en) * | 2007-03-30 | 2011-04-13 | 3M Innovative Properties Co | Illuminated license plate |
| EP2132059A1 (en) * | 2007-03-30 | 2009-12-16 | 3M Innovative Properties Company | Illuminated license plate |
| CN103119351A (en) * | 2010-09-08 | 2013-05-22 | 富士胶片株式会社 | Light guide plate, planar lighting device, and liquid crystal display device |
| JP2017507103A (en) * | 2014-01-29 | 2017-03-16 | コーニング インコーポレイテッド | Glass for display lighting processed with laser |
| KR20160016020A (en) * | 2014-08-01 | 2016-02-15 | 엘지디스플레이 주식회사 | Reflector for uniform brightness and liquid crystal display device having thereof |
| KR102222297B1 (en) * | 2014-08-01 | 2021-03-02 | 엘지디스플레이 주식회사 | Reflector for uniform brightness and liquid crystal display device having thereof |
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Legal Events
| Date | Code | Title | Description |
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| A300 | Withdrawal of application because of no request for examination |
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